Combined venting and draft tube



(No Model.)

G. E. COLLINS & A. J. WEATHERHEAD.

- COMBINED VENTING AND DRAFT TUBE.

N0. 341,555.5 Patented May 11, 1886.

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UNIT D STATES PATENT OFFICE.

GEORGE E. COLLINS AND ALBERT J. WEATHERHEAD, OF CLEVELAND, AS-

SIGNORS OF ONE-THIRD 'lO JACOB J. MAYER, OE CUYAHOGA COUNTY,

OHIO.

COMBINED VENTING AND DRAFT TUBE.

SFECIFIGATIQN forming part of Letters Patent No. 341,555. dated May 11, 1886.

a Application filed March 12, 1886. Serial No. 195,020. (No model.)

.To all whom it may concern: Be it known that we, GEORGE E. COLLIN and ALBERT J. WEATHERHEAD, citizens of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio,

have invented certain new and useful Improvements in Combined Venting and Draft Tubes; and we do herebydeclare that the following is a full, clear, and exact. description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to combined venting and draft tubes, and is designed more espe- I5 cially for use in drawing beer from barrels, al-

though it may be employed for other purposes.

The invention consists in the construct-ion and combination of parts hereinafter described, and fully pointed out in the claims.

Referring to the drawings, Figure 1 is a vertical elevation, partly in section and on working scale, of my improved venting and draft tube; and Fig. 2 shows the tube in connection with a beerbarrel.

A representsa tubecoupling provided with an ordinary turn-cock, B, a screw-threaded neck, C, for the attachment of the dischargespout, and on its opposite side a neck, D. The neck 1) has a diiferential bore screw-threaded 3o interiorly at its lower end, (1, and atits upper reduced end, (1?, leaving an uncut portion, (1, between them.

Into the upper reduced end, d of the bore I secure a threaded tube or pipe, E, and into the lower enlarged end, (1, another tube, G. These tubes or pipes are held firmly and immovably on their seats during the operation of the device, and are of such relative size that an air chamber or space, 6, is formed between them. This space 6 properly begins at the shoulder, or offset formed by the reduced bore (1", and extends downward between the tubes to the end of the inner tube, E. This end of the tube E is formed with a flanged or 5 flaring mouth, c, of the exactsize necessary to snugly occupy and fill the inner diameter of the tube G, and prevent the escape of beer or fluid into the space between said tubes, as well as the passage of air from the'air-chamher e, between the tubes at this point. The

tube E may be extended to any desired depth in the tube G, provided it projects below the orifices g in the tube G, through which the air enters the barrel. In practice we prefer to prolong the inner tube to near the lower end of the outer tube, and may place the air openings or orifices g at any point along the tube G,between the bung H and the end of the inner tube. It will of course be understood that the combined vent and draft tube thus'formed is suitabl y secured in the bung to prevent the escape of air or gas, and is adapted to be verticall y adjusted in said bung, as occasion may require.

At one side of the neck D is formed an in- 6 duction air-tube or neck, I, having an opening, t, by which it communicates with the annular space (2 in the neck I). A plug, K, with a suitable inlet valve, If, at its inner end is shown as secured in the tube I.

Any construction provided with an induction-valve might be substituted for that shown, and would serve our purpose.

The valve-plug is suitably shaped at K to attach a tube, by which it is connected to the air-pump.

Having thus described our invention, what we claim as new, and desireto secure by Let ters Patent, is

1. In venting and draft tubes, a tube-coup ling having a seat for a turn-cock, a neck to attach the discharge spout or pipe, a neck on the opposite side having a ditlerential bore screw-threaded in both its wider and narrower diameters, an air-inlet neck at the side of said 8 differential bore, and tubes secured in said bore, as set forth.

2. A tube-coupling provided with a differential bore and avalved air-inlet opposite said bore, in combination with two tubes, one within the other, and having an air-space between them and secured in thediflerential bore, substantially as described:

3. In venting and draft tubes, a tubecoupling provided with a diflerential bore and an 95 air-inlet at its side, in combination with two tubes arranged one within the other and having an air-space between them, the inner tube being seated in the smaller diameter oftne bore and provided with'an enlarged lower end and me the outer tube seated in the larger diameter of the bore and having orifices in its side, substantially as set forth.

4. The combination of a larger and a smaller tube placed one Within theother, the inner tube projecting above the outer tube, and the outer-tube projecting below the inner tube and having an air-space between them with a coupling having a differential bore in which said tubes'are secured, and a valved air-passage, substantially as set forth.

5. The combination of an outer pipe having air-orifices in its side, an inner pipe of less diameter having an enlarged lower end bearing closely against the inside of the other pipe,and a continuous air space between said pipes 

